Car-truck bolster.



No. 821,312. PATENTED MAYZZ O. S. PULLIAM.

GAR TRUCK BOLSTER.

APPLICATION FILED ooT.e. 1905.

INVNT'OR l @Maw n m 55 Q -i -..E mt 1 M E 1 w ATTORNEY Mmnzw a. GRAHAMce, Moro-unionmwrw wnswumom u Q UNITED sTATEs PATENT oEEroE.

OSWALD S. PULLIAM, OF PITTSBURG, PENNSYLVANIA.

CAR-TRUCK B OLSTER.

N 0. 821,312. Specification of Letters Patent. if 3336111366- May 22,1906- Application filed October 6, 1905. Serial No. 281,647.

What I claim is-- To ZZ whom t may concern:

Be it known that I, OswALD S. PULLIAM, a

1. A car-truck bolster comprising a comcitizen of the United States,residing at Pittspression member, a tension member and a burg, in thecounty of Allegheny and State of web connecting said members constructedof Pennsylvania, have invented new and useful three T-shaped pieces, andmeans for secur- Improvements in Car Truck Bolsters, of ing the T-piecestogether. which the following' is a specification. 2. A car-truckbolster substantially T- 60 The object of my invention is to provide ashaped in cross-section, comprising a comnew and improved car-truckbolster particupression member having edge flanges extendlarly designedto take care of all torsional in above and below said memberthroughstrains to which truck-bolsters are subjected out the length ofthe member, a tension mem- 1n practice. ber, and a web connecting thecompression 65 A further object of the present invention is and tensionmembers. the production of a truck-bolster of such form 3. A car-truckbolster having a top memthat it maybe built up of a plurality of T- berformed of two substantially T-shaped pieces suitably joined or cast asan integral pieces, a bottom member and a web connectstructure. ing thetwo members. 7O To these ends my invention consists, of a 4. A car-truckbolster having a top memcar-trucl; bolster, in the novel features ofconv ber formed of two substantially T-shaped struction and in thecombination of parts, all pieces, each provided with an engaging flange,as fully hereinafter described and claimed. a bottom member, and a webconnecting the a In the accompanying drawings, which illussaid members.75 Jtrate applications of my invention, Figure 1 5. A car-truck bolsterhaving a top memy is a top plan view of a bolster constructed in berformed of two substantially T-shaped' accordance with my invention; Fig.2, a side pieces, each provided with an engaging fiange, elevationalview; Fig. 3, a cross-sectional means for securing the fianges together,a botview taken on line II II of Fig. 2, and Fig. 4 a tom member, and aweb connecting said 8O cross sectional view showing the bolster members.`formed as an integral structure. 6. A car-truck bolster having a topmem Referring to the drawings, the truck-bolster ber formed of twosubstantially T-shaped as illustrated in the form of Fig. 1 comprisespieces, each providedwith an engaging flange, the top or compressionmember, the bottom a bottom member, a web connecting said 8 5 members,said web located between the two engaging fianges, and means for unitingthe flanges an web.

7. A car-truck bolster having a top member formed of two substantiallyT-shaped pieces, a bottom member and web formed of a singlesubstantially T-shaped piece, and means for securing the web to the topmember.

8. A car-truck bolster having a top member formed of two substantially T-shaped pieces, each provided with an engaging flange, a bottom memberand web formed of a single substantially T-shaped piece, said weblocated between the flanges and means for uniting the web and flanges.

In testimony whereof I affix my signature in presence of two subscribingwitnesses.

OSWALD S. PULLIAM.

or tension member, and the vertical web joining said compression andtension members. In this form of bolster the compression member isconstructed of two T -pieces 2 2, each provided with adownwardly-projecting flange 3. In addition to the flange 3 each piece 2has an edge flange, which flange eX- tends above and below the top orcompression member. The tension member and the web are formed of asingle T-piece 4. The three T-pieces 2, 2, and 4 are joined togetherdirectly under the compression member by means of rivets 5, which latterare passe through the flange 3 of each T-piece 2 and through the upperedge of the web portion of T-pieces 4.

In the form of Fig. 4 the bolster is cast as an integral structure. Thecenter-bearing 6 and the usual end bearings 7 are shown and may besecured to the compression member in any suitable manner.

Witnesses:

W. Gr. DOOLTTTLE, E. M. FERGUSON.

IOO

